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Splash Screen. Five-Minute Check (over Lesson 7–3) Main Idea and Vocabulary Example 1: Make a Frequency Table Example 2: Make and Interpret a Frequency Table Example 3: Non-Numerical Data. Lesson Menu. I will make and interpret frequency graphs. frequency table. Main Idea/Vocabulary.
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Five-Minute Check (over Lesson 7–3) Main Idea and Vocabulary Example 1: Make a Frequency Table Example 2: Make and Interpret a Frequency Table Example 3: Non-Numerical Data Lesson Menu
I will make and interpret frequency graphs. • frequency table Main Idea/Vocabulary
Make a Frequency Table Refer to the table. Make a frequency table of the data. Then describe the data. Example 1
Step 2 Use tally marks to record each data value. The last column provides a count, or frequency, of the data. Make a Frequency Table Step 1 Make a table with three columns. Label the columns Number, Tally, and Frequency as shown. Step 3 Describe the data. Example 1
The median is 2 . Half of the data are above 2 and half of the data are below 2 . Make a Frequency Table • The mode is 2. More people watch TV for 2 hours than any other number. • The range of the data is 5 – 0 or 5. There are no outliers. Answer: So, half of the data is less than or equal to 2 hours. More people watch TV for 2 hours than any other number. Example 1
A B C D Which of the choices best describes the data in the frequency table? • More people’s favorite color is black than any other color. • More than half the people chose red, green, and pink as their favorite color. • No one’s favorite color is purple. • Everyone chose pink as their favorite color. Example 1
Make and Interpret a Frequency Table The table shows the number of hours students in Mr. Narayan’s class spent on homework last week. Make a frequency table. Find the median, mode, range, and any outliers. Then describe the data. Example 2
Make and Interpret a Frequency Table The least number of hours spent on homework is 2, and the greatest number is 5. So, in the first column, write the numbers 2 to 5. Next, tally the data. Finally, add the tallies. The median is the 8th number, or 4 hours. Half of the data are less than 4 hours and half are greater than or equal to 4 hours. Example 2
Make and Interpret a Frequency Table The mode is 4 hours, since 4 appears more often than any other number. The range is 5 – 2, or 3 hours. There are no outliers. Example 2
Make and Interpret a Frequency Table Answer: So, the median is 4, the mode is 4, the range is 3, and there are no outliers. Half of the data are less than 4 hours and half are greater than or equal to 4 hours. More people study 4 hours than any other number of hours. Example 2
A B C D What is the median, mode, range, and outliers (if any) of the data below? • median 2; mode 2; range 0; outlier 7 • median 2; mode 5; range 0; outlier none • median 2; mode 7; range 7; outlier none • median 4; mode 7; range 5; outlier 7 Example 2
Non-Numerical Data The table shows student’s favorite kinds of movies. Make a frequency table of the data. Then use it to describe the mode. Example 3
Non-Numerical Data Answer: Since more students chose comedy as their favorite movie than any other kind, the mode is comedy. Example 3
A B C D What is the mode of the data? • 3 • 4 • 5 • 7 Example 3
End of the Lesson End Lesson
Five-Minute Check (over Lesson 7–3) Image Bank Math Tool Chest Use an Appropriate Graph Resources
(over Lesson 7–3) Draw a line plot for the set of data. Five Minute Check 1
A B C D A. B. C. D. (over Lesson 7–3) Five Minute Check 1b
A B C D (over Lesson 7–3) Find the median, mode, range, and any outliers of the data shown in the line plot. • median: 62, mode: 52, range: 13, outlier: 73 • median: 54, mode: 63, range: 14, outlier: 68 • median: 52, mode: 53, range: 21, outlier: 68 • median: 67, mode: 53, range: 25, outlier: 48 Five Minute Check 2